Prevalence of, and predictors of, bile acid diarrhea in outpatients with chronic diarrhea: A follow-up study.

Published on Sep 1, 2019in Neurogastroenterology and Motility2.946
· DOI :10.1111/NMO.13666
Shujing Jane Lim1
Estimated H-index: 1
(St James's University Hospital),
David J. Gracie16
Estimated H-index: 16
(University of Leeds)
+ 5 AuthorsChristopher J Black13
Estimated H-index: 13
(University of Leeds)
BACKGROUND: 23-seleno-25-homo-tauro-cholic acid (SeHCAT) scanning to rule out bile acid diarrhea (BAD) in patients with chronic diarrhea has a high yield. Our previous study showed that patients with terminal ileal (TI) Crohn's disease, TI resection, or cholecystectomy were highly likely to have an abnormal scan. As a result, we encouraged clinicians to use a therapeutic trial of a bile acid sequestrant in these patients, instead of scanning. This may have reduced diagnostic yield of the test, so we examined this issue, as well as factors predicting an abnormal scan, in a large cohort of patients referred subsequently. METHODS: We retrospectively identified 1,071 consecutive patients with chronic diarrhea undergoing SeHCAT scanning at Leeds Teaching Hospitals Trust from 2012 to 2016. We reviewed electronic patient records to obtain information on presenting gastrointestinal symptoms and any proposed risk factors for BAD. BAD was categorized according to subtype and severity. KEY RESULTS: As expected, indications for scanning changed between 2012 and 2016, with a significant reduction in referrals with TI Crohn's disease or resection year-on-year (P   40%. One-third of those without known risk factors had BAD.
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